1 /* $Id: io.h,v 1.47 2001/12/13 10:36:02 davem Exp $ */
5 #include <linux/kernel.h>
6 #include <linux/compiler.h>
7 #include <linux/types.h>
9 #include <asm/page.h> /* IO address mapping routines need this */
10 #include <asm/system.h>
14 #define __SLOW_DOWN_IO do { } while (0)
15 #define SLOW_DOWN_IO do { } while (0)
17 extern unsigned long virt_to_bus_not_defined_use_pci_map(volatile void *addr);
18 #define virt_to_bus virt_to_bus_not_defined_use_pci_map
19 extern unsigned long bus_to_virt_not_defined_use_pci_map(volatile void *addr);
20 #define bus_to_virt bus_to_virt_not_defined_use_pci_map
22 /* BIO layer definitions. */
23 extern unsigned long kern_base, kern_size;
24 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
25 #define BIO_VMERGE_BOUNDARY 8192
27 static __inline__ u8 _inb(unsigned long addr)
31 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_inb */"
33 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
38 static __inline__ u16 _inw(unsigned long addr)
42 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_inw */"
44 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
49 static __inline__ u32 _inl(unsigned long addr)
53 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_inl */"
55 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
60 static __inline__ void _outb(u8 b, unsigned long addr)
62 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_outb */"
64 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
67 static __inline__ void _outw(u16 w, unsigned long addr)
69 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_outw */"
71 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
74 static __inline__ void _outl(u32 l, unsigned long addr)
76 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_outl */"
78 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
81 #define inb(__addr) (_inb((unsigned long)(__addr)))
82 #define inw(__addr) (_inw((unsigned long)(__addr)))
83 #define inl(__addr) (_inl((unsigned long)(__addr)))
84 #define outb(__b, __addr) (_outb((u8)(__b), (unsigned long)(__addr)))
85 #define outw(__w, __addr) (_outw((u16)(__w), (unsigned long)(__addr)))
86 #define outl(__l, __addr) (_outl((u32)(__l), (unsigned long)(__addr)))
88 #define inb_p(__addr) inb(__addr)
89 #define outb_p(__b, __addr) outb(__b, __addr)
90 #define inw_p(__addr) inw(__addr)
91 #define outw_p(__w, __addr) outw(__w, __addr)
92 #define inl_p(__addr) inl(__addr)
93 #define outl_p(__l, __addr) outl(__l, __addr)
95 extern void outsb(unsigned long, const void *, unsigned long);
96 extern void outsw(unsigned long, const void *, unsigned long);
97 extern void outsl(unsigned long, const void *, unsigned long);
98 extern void insb(unsigned long, void *, unsigned long);
99 extern void insw(unsigned long, void *, unsigned long);
100 extern void insl(unsigned long, void *, unsigned long);
102 static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
104 insb((unsigned long __force)port, buf, count);
106 static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
108 insw((unsigned long __force)port, buf, count);
111 static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
113 insl((unsigned long __force)port, buf, count);
116 static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
118 outsb((unsigned long __force)port, buf, count);
121 static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
123 outsw((unsigned long __force)port, buf, count);
126 static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
128 outsl((unsigned long __force)port, buf, count);
131 /* Memory functions, same as I/O accesses on Ultra. */
132 static inline u8 _readb(const volatile void __iomem *addr)
135 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
137 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
141 static inline u16 _readw(const volatile void __iomem *addr)
144 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
146 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
151 static inline u32 _readl(const volatile void __iomem *addr)
154 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
156 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
161 static inline u64 _readq(const volatile void __iomem *addr)
164 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
166 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
171 static inline void _writeb(u8 b, volatile void __iomem *addr)
173 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
175 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
178 static inline void _writew(u16 w, volatile void __iomem *addr)
180 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
182 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
185 static inline void _writel(u32 l, volatile void __iomem *addr)
187 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
189 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
192 static inline void _writeq(u64 q, volatile void __iomem *addr)
194 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
196 : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L));
199 #define readb(__addr) _readb(__addr)
200 #define readw(__addr) _readw(__addr)
201 #define readl(__addr) _readl(__addr)
202 #define readq(__addr) _readq(__addr)
203 #define readb_relaxed(__addr) _readb(__addr)
204 #define readw_relaxed(__addr) _readw(__addr)
205 #define readl_relaxed(__addr) _readl(__addr)
206 #define readq_relaxed(__addr) _readq(__addr)
207 #define writeb(__b, __addr) _writeb(__b, __addr)
208 #define writew(__w, __addr) _writew(__w, __addr)
209 #define writel(__l, __addr) _writel(__l, __addr)
210 #define writeq(__q, __addr) _writeq(__q, __addr)
212 /* Now versions without byte-swapping. */
213 static __inline__ u8 _raw_readb(unsigned long addr)
217 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
219 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
224 static __inline__ u16 _raw_readw(unsigned long addr)
228 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
230 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
235 static __inline__ u32 _raw_readl(unsigned long addr)
239 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
241 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
246 static __inline__ u64 _raw_readq(unsigned long addr)
250 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
252 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
257 static __inline__ void _raw_writeb(u8 b, unsigned long addr)
259 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
261 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
264 static __inline__ void _raw_writew(u16 w, unsigned long addr)
266 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
268 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
271 static __inline__ void _raw_writel(u32 l, unsigned long addr)
273 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
275 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
278 static __inline__ void _raw_writeq(u64 q, unsigned long addr)
280 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
282 : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
285 #define __raw_readb(__addr) (_raw_readb((unsigned long)(__addr)))
286 #define __raw_readw(__addr) (_raw_readw((unsigned long)(__addr)))
287 #define __raw_readl(__addr) (_raw_readl((unsigned long)(__addr)))
288 #define __raw_readq(__addr) (_raw_readq((unsigned long)(__addr)))
289 #define __raw_writeb(__b, __addr) (_raw_writeb((u8)(__b), (unsigned long)(__addr)))
290 #define __raw_writew(__w, __addr) (_raw_writew((u16)(__w), (unsigned long)(__addr)))
291 #define __raw_writel(__l, __addr) (_raw_writel((u32)(__l), (unsigned long)(__addr)))
292 #define __raw_writeq(__q, __addr) (_raw_writeq((u64)(__q), (unsigned long)(__addr)))
294 /* Valid I/O Space regions are anywhere, because each PCI bus supported
295 * can live in an arbitrary area of the physical address range.
297 #define IO_SPACE_LIMIT 0xffffffffffffffffUL
299 /* Now, SBUS variants, only difference from PCI is that we do
300 * not use little-endian ASIs.
302 static inline u8 _sbus_readb(const volatile void __iomem *addr)
306 __asm__ __volatile__("lduba\t[%1] %2, %0\t/* sbus_readb */"
308 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
313 static inline u16 _sbus_readw(const volatile void __iomem *addr)
317 __asm__ __volatile__("lduha\t[%1] %2, %0\t/* sbus_readw */"
319 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
324 static inline u32 _sbus_readl(const volatile void __iomem *addr)
328 __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* sbus_readl */"
330 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
335 static inline u64 _sbus_readq(const volatile void __iomem *addr)
339 __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* sbus_readq */"
341 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
346 static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
348 __asm__ __volatile__("stba\t%r0, [%1] %2\t/* sbus_writeb */"
350 : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
353 static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
355 __asm__ __volatile__("stha\t%r0, [%1] %2\t/* sbus_writew */"
357 : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
360 static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
362 __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* sbus_writel */"
364 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
367 static inline void _sbus_writeq(u64 l, volatile void __iomem *addr)
369 __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* sbus_writeq */"
371 : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
374 #define sbus_readb(__addr) _sbus_readb(__addr)
375 #define sbus_readw(__addr) _sbus_readw(__addr)
376 #define sbus_readl(__addr) _sbus_readl(__addr)
377 #define sbus_readq(__addr) _sbus_readq(__addr)
378 #define sbus_writeb(__b, __addr) _sbus_writeb(__b, __addr)
379 #define sbus_writew(__w, __addr) _sbus_writew(__w, __addr)
380 #define sbus_writel(__l, __addr) _sbus_writel(__l, __addr)
381 #define sbus_writeq(__l, __addr) _sbus_writeq(__l, __addr)
383 static inline void _sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
391 #define sbus_memset_io(d,c,sz) _sbus_memset_io(d,c,sz)
394 _memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
396 volatile void __iomem *d = dst;
404 #define memset_io(d,c,sz) _memset_io(d,c,sz)
407 _memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
412 char tmp = readb(src);
418 #define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
421 _memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
424 volatile void __iomem *d = dst;
433 #define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
439 /* On sparc64 we have the whole physical IO address space accessible
440 * using physically addressed loads and stores, so this does nothing.
442 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
444 return (void __iomem *)offset;
447 #define ioremap_nocache(X,Y) ioremap((X),(Y))
449 static inline void iounmap(volatile void __iomem *addr)
453 #define ioread8(X) readb(X)
454 #define ioread16(X) readw(X)
455 #define ioread32(X) readl(X)
456 #define iowrite8(val,X) writeb(val,X)
457 #define iowrite16(val,X) writew(val,X)
458 #define iowrite32(val,X) writel(val,X)
460 /* Create a virtual mapping cookie for an IO port range */
461 extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
462 extern void ioport_unmap(void __iomem *);
464 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
466 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
467 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
469 /* Similarly for SBUS. */
470 #define sbus_ioremap(__res, __offset, __size, __name) \
471 ({ unsigned long __ret; \
472 __ret = (__res)->start + (((__res)->flags & 0x1ffUL) << 32UL); \
473 __ret += (unsigned long) (__offset); \
474 if (! request_region((__ret), (__size), (__name))) \
476 (void __iomem *) __ret; \
479 #define sbus_iounmap(__addr, __size) \
480 release_region((unsigned long)(__addr), (__size))
484 #define dma_cache_inv(_start,_size) do { } while (0)
485 #define dma_cache_wback(_start,_size) do { } while (0)
486 #define dma_cache_wback_inv(_start,_size) do { } while (0)
489 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
492 #define xlate_dev_mem_ptr(p) __va(p)
495 * Convert a virtual cached pointer to an uncached pointer
497 #define xlate_dev_kmem_ptr(p) p
501 #endif /* !(__SPARC64_IO_H) */